4th axis Post and tool axis with A and B tilt.

Hello Ive discovered an issue with my post that ive used for years, that I'd like to come up with a fix for.

Its a 4th axis Post for A axis.

I just ran into an issue that if i accidentally have a slight B tilt to my tool axis in an operation, that i dont get the correct A number in the code, it just leaves it at the prior A, and makes that cut from the complete wrong attitude.

The best thing i suppose would to just have PB error out if theres any B tilt to a tool axis. So i can go back and fix that operation.

But im not finding the piece of code that decides the A number for a tool axis so maybe i could add in an IF B then Error snipet.

Re: 4th axis Post and tool axis with A and B tilt.

Part moving. The post itself works fine, and has for years, If evidently all your tool axis' Are all only rotating around X. I just accidentally defined one with .01 of B tilt and 90deg of A tilt, and it completely hosed the code. I'd like to become aware if i ever do that again. I couldnt see the B tilt in Verify it was so slight. But the code left it at the prior A, with my clearance planes being Y motions instead of Z and everything. In verify, it did look like the correct attitude though.

Re: 4th axis Post and tool axis with A and B tilt.

Ok - I guess you are saying you don't have a B but the NX geometry sent a tool axis to the post which is a little out for what the kinematics handles. Even though you get output - if you launch the review tool - I bet there is a warning that the tool axis can't be achieved.